Yes, but they _could_ be a closed loop system if governments demanded it. And they should.
The could, and should generate their own electricity as well. And perhaps even provide free power to the surrounding neighborhood to make up for the noise and inconvenience of having one nearby.
Very interesting how your enlightening comments about dirty AI data centers are being downvoted. Pro-Musk, pro-AI bots and shills trying to keep the smoke screen going?